Phonograph
A device for the mechanical recording and reproduction of sound, typically using a rotating cylinder or disc with a modulated groove.
Core metadata
- ID: phonograph
- Era: Industrial
- First known date: 1877 (exact)
- Region: Menlo Park, New Jersey, United States
- Review status: source_checked
- Maturity: N/A
Prerequisites
- Mass Production (mass_production)
- Mechanical Clocks (mechanical_clocks)
- Scientific Method (scientific_method)
- Telegraph (telegraph)
Dependents
Fields
- None.
Node sources
- The Phonograph (National Park Service, 2026, official_agency) • Supports: node
Locator: NPS states that the first phonograph was invented in 1877 at Edison's Menlo Park laboratory. - Gramophone / phonograph (Encyclopaedia Britannica, 2026, textbook) • Supports: node
Locator: Britannica identifies Edison's 1877 phonograph as the first device capable of both recording and reproducing sound.
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 4
- Average edge confidence: 68%
- Prerequisite sources: 4
- expert_inference: 4
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Mechanical Clocks (mechanical_clocks) | enabling | 68% | expert_inference | Mechanical Clocks provides a capability that enables this technology without being the only possible path. |
|
| Scientific Method (scientific_method) | enabling | 68% | expert_inference | Scientific Method provides a capability that enables this technology without being the only possible path. |
|
| Mass Production (mass_production) | enabling | 68% | expert_inference | Mass Production provides a capability that enables this technology without being the only possible path. |
|
| Telegraph (telegraph) | enabling | 68% | expert_inference | Telegraph provides a capability that enables this technology without being the only possible path. |
|
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